-82.98% is the change from 517 to 88
Calculation steps:
[( 88 - 517 ) ÷ 517] x 100 = -82.98%
Formula
Percentage change = [(88 - 517) / 517] x 100
Subtract the new number by the original number
88 - 517 = -429
-429 ÷ 517 = -0.8297872340425532
-0.8297872340425532 x 100 = -82.98%