31.11% is the change from 646 to 847
Calculation steps:
[( 847 - 646 ) ÷ 646] x 100 = 31.11%
Formula
Percentage change = [(847 - 646) / 646] x 100
Subtract the new number by the original number
847 - 646 = 201
201 ÷ 646 = 0.3111455108359133
0.3111455108359133 x 100 = 31.11%