-57.5% is the change from 913 to 388
Calculation steps:
[( 388 - 913 ) ÷ 913] x 100 = -57.5%
Formula
Percentage change = [(388 - 913) / 913] x 100
Subtract the new number by the original number
388 - 913 = -525
-525 ÷ 913 = -0.5750273822562979
-0.5750273822562979 x 100 = -57.5%