-82.01% is the change from 517 to 93
Calculation steps:
[( 93 - 517 ) ÷ 517] x 100 = -82.01%
Formula
Percentage change = [(93 - 517) / 517] x 100
Subtract the new number by the original number
93 - 517 = -424
-424 ÷ 517 = -0.8201160541586073
-0.8201160541586073 x 100 = -82.01%