-59.23% is the change from 520 to 212
Calculation steps:
[( 212 - 520 ) ÷ 520] x 100 = -59.23%
Formula
Percentage change = [(212 - 520) / 520] x 100
Subtract the new number by the original number
212 - 520 = -308
-308 ÷ 520 = -0.5923076923076923
-0.5923076923076923 x 100 = -59.23%