-94.24% is the change from 538 to 31
Calculation steps:
[( 31 - 538 ) ÷ 538] x 100 = -94.24%
Formula
Percentage change = [(31 - 538) / 538] x 100
Subtract the new number by the original number
31 - 538 = -507
-507 ÷ 538 = -0.9423791821561338
-0.9423791821561338 x 100 = -94.24%