-89.04% is the change from 520 to 57
Calculation steps:
[( 57 - 520 ) ÷ 520] x 100 = -89.04%
Formula
Percentage change = [(57 - 520) / 520] x 100
Subtract the new number by the original number
57 - 520 = -463
-463 ÷ 520 = -0.8903846153846153
-0.8903846153846153 x 100 = -89.04%