40.5% is the change from 642 to 902
Calculation steps:
[( 902 - 642 ) ÷ 642] x 100 = 40.5%
Formula
Percentage change = [(902 - 642) / 642] x 100
Subtract the new number by the original number
902 - 642 = 260
260 ÷ 642 = 0.40498442367601245
0.40498442367601245 x 100 = 40.5%