-84.98% is the change from 506 to 76
Calculation steps:
[( 76 - 506 ) ÷ 506] x 100 = -84.98%
Formula
Percentage change = [(76 - 506) / 506] x 100
Subtract the new number by the original number
76 - 506 = -430
-430 ÷ 506 = -0.849802371541502
-0.849802371541502 x 100 = -84.98%