-81.46% is the change from 507 to 94
Calculation steps:
[( 94 - 507 ) ÷ 507] x 100 = -81.46%
Formula
Percentage change = [(94 - 507) / 507] x 100
Subtract the new number by the original number
94 - 507 = -413
-413 ÷ 507 = -0.814595660749507
-0.814595660749507 x 100 = -81.46%