-85.5% is the change from 538 to 78
Calculation steps:
[( 78 - 538 ) ÷ 538] x 100 = -85.5%
Formula
Percentage change = [(78 - 538) / 538] x 100
Subtract the new number by the original number
78 - 538 = -460
-460 ÷ 538 = -0.8550185873605948
-0.8550185873605948 x 100 = -85.5%