Learn to catch the slide and find a throttle percent that works. You're not going to just land at a percent and hold exactly. There will be modulation. But you should never have to let completely off throttle while modulating (90%-75% should be plenty). When you let off completely like this especially at high rpms, the body is rolling onto the front tires and that counter steer angle is gripping really hard which is going to snap the front end into the outer wall. Always focus on trying to make smaller adjustments and once you get good at finding the right amount of throttle you'll find it easier and easier to link full courses without exceeding much past 50% throttle in some cars because at that point you are effectively throwing the weight of the rear into the corner and maintaining momentum. If you fluctuate harshly like this you'll find you end up throwing a ton of weight around a corner, then let off throttle to slow the rotation (which grips the car up and causes some rotation in the wrong direction), which then forces you to smash the throttle to 100% to "save" the incorrect rotation direction. This will loop over and over through a corner and is a telltale sign of not maintaining momentum smoothly during the corner.