-56.52% is the change from 913 to 397
Calculation steps:
[( 397 - 913 ) ÷ 913] x 100 = -56.52%
Formula
Percentage change = [(397 - 913) / 913] x 100
Subtract the new number by the original number
397 - 913 = -516
-516 ÷ 913 = -0.5651697699890471
-0.5651697699890471 x 100 = -56.52%