-82.49% is the change from 531 to 93
Calculation steps:
[( 93 - 531 ) ÷ 531] x 100 = -82.49%
Formula
Percentage change = [(93 - 531) / 531] x 100
Subtract the new number by the original number
93 - 531 = -438
-438 ÷ 531 = -0.8248587570621468
-0.8248587570621468 x 100 = -82.49%