45.65% is the change from 644 to 938
Calculation steps:
[( 938 - 644 ) ÷ 644] x 100 = 45.65%
Formula
Percentage change = [(938 - 644) / 644] x 100
Subtract the new number by the original number
938 - 644 = 294
294 ÷ 644 = 0.45652173913043476
0.45652173913043476 x 100 = 45.65%