-85.38% is the change from 520 to 76
Calculation steps:
[( 76 - 520 ) ÷ 520] x 100 = -85.38%
Formula
Percentage change = [(76 - 520) / 520] x 100
Subtract the new number by the original number
76 - 520 = -444
-444 ÷ 520 = -0.8538461538461538
-0.8538461538461538 x 100 = -85.38%