-74.7% is the change from 913 to 231
Calculation steps:
[( 231 - 913 ) ÷ 913] x 100 = -74.7%
Formula
Percentage change = [(231 - 913) / 913] x 100
Subtract the new number by the original number
231 - 913 = -682
-682 ÷ 913 = -0.7469879518072289
-0.7469879518072289 x 100 = -74.7%