-81.47% is the change from 502 to 93
Calculation steps:
[( 93 - 502 ) ÷ 502] x 100 = -81.47%
Formula
Percentage change = [(93 - 502) / 502] x 100
Subtract the new number by the original number
93 - 502 = -409
-409 ÷ 502 = -0.8147410358565738
-0.8147410358565738 x 100 = -81.47%