49.07% is the change from 644 to 960
Calculation steps:
[( 960 - 644 ) ÷ 644] x 100 = 49.07%
Formula
Percentage change = [(960 - 644) / 644] x 100
Subtract the new number by the original number
960 - 644 = 316
316 ÷ 644 = 0.4906832298136646
0.4906832298136646 x 100 = 49.07%