-52.6% is the change from 538 to 255
Calculation steps:
[( 255 - 538 ) ÷ 538] x 100 = -52.6%
Formula
Percentage change = [(255 - 538) / 538] x 100
Subtract the new number by the original number
255 - 538 = -283
-283 ÷ 538 = -0.5260223048327137
-0.5260223048327137 x 100 = -52.6%