-43.04% is the change from 913 to 520
Calculation steps:
[( 520 - 913 ) ÷ 913] x 100 = -43.04%
Formula
Percentage change = [(520 - 913) / 913] x 100
Subtract the new number by the original number
520 - 913 = -393
-393 ÷ 913 = -0.4304490690032859
-0.4304490690032859 x 100 = -43.04%