50% is the change from 634 to 951
Calculation steps:
[( 951 - 634 ) ÷ 634] x 100 = 50%
Formula
Percentage change = [(951 - 634) / 634] x 100
Subtract the new number by the original number
951 - 634 = 317
317 ÷ 634 = 0.5
0.5 x 100 = 50%
Example