40.58% is the change from 616 to 866
Calculation steps:
[( 866 - 616 ) ÷ 616] x 100 = 40.58%
Formula
Percentage change = [(866 - 616) / 616] x 100
Subtract the new number by the original number
866 - 616 = 250
250 ÷ 616 = 0.40584415584415584
0.40584415584415584 x 100 = 40.58%