42.55% is the change from 644 to 918
Calculation steps:
[( 918 - 644 ) ÷ 644] x 100 = 42.55%
Formula
Percentage change = [(918 - 644) / 644] x 100
Subtract the new number by the original number
918 - 644 = 274
274 ÷ 644 = 0.4254658385093168
0.4254658385093168 x 100 = 42.55%