41.24% is the change from 645 to 911
Calculation steps:
[( 911 - 645 ) ÷ 645] x 100 = 41.24%
Formula
Percentage change = [(911 - 645) / 645] x 100
Subtract the new number by the original number
911 - 645 = 266
266 ÷ 645 = 0.4124031007751938
0.4124031007751938 x 100 = 41.24%