-76.79% is the change from 517 to 120
Calculation steps:
[( 120 - 517 ) ÷ 517] x 100 = -76.79%
Formula
Percentage change = [(120 - 517) / 517] x 100
Subtract the new number by the original number
120 - 517 = -397
-397 ÷ 517 = -0.7678916827852998
-0.7678916827852998 x 100 = -76.79%