31.37% is the change from 644 to 846
Calculation steps:
[( 846 - 644 ) ÷ 644] x 100 = 31.37%
Formula
Percentage change = [(846 - 644) / 644] x 100
Subtract the new number by the original number
846 - 644 = 202
202 ÷ 644 = 0.3136645962732919
0.3136645962732919 x 100 = 31.37%