44.34% is the change from 645 to 931
Calculation steps:
[( 931 - 645 ) ÷ 645] x 100 = 44.34%
Formula
Percentage change = [(931 - 645) / 645] x 100
Subtract the new number by the original number
931 - 645 = 286
286 ÷ 645 = 0.4434108527131783
0.4434108527131783 x 100 = 44.34%