36.8% is the change from 644 to 881
Calculation steps:
[( 881 - 644 ) ÷ 644] x 100 = 36.8%
Formula
Percentage change = [(881 - 644) / 644] x 100
Subtract the new number by the original number
881 - 644 = 237
237 ÷ 644 = 0.36801242236024845
0.36801242236024845 x 100 = 36.8%