21.83% is the change from 646 to 787
Calculation steps:
[( 787 - 646 ) ÷ 646] x 100 = 21.83%
Formula
Percentage change = [(787 - 646) / 646] x 100
Subtract the new number by the original number
787 - 646 = 141
141 ÷ 646 = 0.21826625386996903
0.21826625386996903 x 100 = 21.83%