4.54% is the change from 881 to 921
Calculation steps:
[( 921 - 881 ) ÷ 881] x 100 = 4.54%
Formula
Percentage change = [(921 - 881) / 881] x 100
Subtract the new number by the original number
921 - 881 = 40
40 ÷ 881 = 0.04540295119182747
0.04540295119182747 x 100 = 4.54%