4.34% is the change from 921 to 961
Calculation steps:
[( 961 - 921 ) ÷ 921] x 100 = 4.34%
Formula
Percentage change = [(961 - 921) / 921] x 100
Subtract the new number by the original number
961 - 921 = 40
40 ÷ 921 = 0.04343105320304017
0.04343105320304017 x 100 = 4.34%