42.7% is the change from 644 to 919
Calculation steps:
[( 919 - 644 ) ÷ 644] x 100 = 42.7%
Formula
Percentage change = [(919 - 644) / 644] x 100
Subtract the new number by the original number
919 - 644 = 275
275 ÷ 644 = 0.42701863354037267
0.42701863354037267 x 100 = 42.7%