4.26% is the change from 634 to 661
Calculation steps:
[( 661 - 634 ) ÷ 634] x 100 = 4.26%
Formula
Percentage change = [(661 - 634) / 634] x 100
Subtract the new number by the original number
661 - 634 = 27
27 ÷ 634 = 0.04258675078864353
0.04258675078864353 x 100 = 4.26%