36.65% is the change from 644 to 880
Calculation steps:
[( 880 - 644 ) ÷ 644] x 100 = 36.65%
Formula
Percentage change = [(880 - 644) / 644] x 100
Subtract the new number by the original number
880 - 644 = 236
236 ÷ 644 = 0.36645962732919257
0.36645962732919257 x 100 = 36.65%