-18.96% is the change from 538 to 436
Calculation steps:
[( 436 - 538 ) ÷ 538] x 100 = -18.96%
Formula
Percentage change = [(436 - 538) / 538] x 100
Subtract the new number by the original number
436 - 538 = -102
-102 ÷ 538 = -0.1895910780669145
-0.1895910780669145 x 100 = -18.96%