40.65% is the change from 615 to 865
Calculation steps:
[( 865 - 615 ) ÷ 615] x 100 = 40.65%
Formula
Percentage change = [(865 - 615) / 615] x 100
Subtract the new number by the original number
865 - 615 = 250
250 ÷ 615 = 0.4065040650406504
0.4065040650406504 x 100 = 40.65%