48.98% is the change from 637 to 949
Calculation steps:
[( 949 - 637 ) ÷ 637] x 100 = 48.98%
Formula
Percentage change = [(949 - 637) / 637] x 100
Subtract the new number by the original number
949 - 637 = 312
312 ÷ 637 = 0.4897959183673469
0.4897959183673469 x 100 = 48.98%