-81.23% is the change from 538 to 101
Calculation steps:
[( 101 - 538 ) ÷ 538] x 100 = -81.23%
Formula
Percentage change = [(101 - 538) / 538] x 100
Subtract the new number by the original number
101 - 538 = -437
-437 ÷ 538 = -0.8122676579925651
-0.8122676579925651 x 100 = -81.23%
Example