-9.85% is the change from 538 to 485
Calculation steps:
[( 485 - 538 ) ÷ 538] x 100 = -9.85%
Formula
Percentage change = [(485 - 538) / 538] x 100
Subtract the new number by the original number
485 - 538 = -53
-53 ÷ 538 = -0.09851301115241635
-0.09851301115241635 x 100 = -9.85%