-60.19% is the change from 520 to 207
Calculation steps:
[( 207 - 520 ) ÷ 520] x 100 = -60.19%
Formula
Percentage change = [(207 - 520) / 520] x 100
Subtract the new number by the original number
207 - 520 = -313
-313 ÷ 520 = -0.6019230769230769
-0.6019230769230769 x 100 = -60.19%