-68.55% is the change from 636 to 200
Calculation steps:
[( 200 - 636 ) ÷ 636] x 100 = -68.55%
Formula
Percentage change = [(200 - 636) / 636] x 100
Subtract the new number by the original number
200 - 636 = -436
-436 ÷ 636 = -0.6855345911949685
-0.6855345911949685 x 100 = -68.55%