-56.96% is the change from 913 to 393
Calculation steps:
[( 393 - 913 ) ÷ 913] x 100 = -56.96%
Formula
Percentage change = [(393 - 913) / 913] x 100
Subtract the new number by the original number
393 - 913 = -520
-520 ÷ 913 = -0.5695509309967142
-0.5695509309967142 x 100 = -56.96%