19.46% is the change from 771 to 921
Calculation steps:
[( 921 - 771 ) ÷ 771] x 100 = 19.46%
Formula
Percentage change = [(921 - 771) / 771] x 100
Subtract the new number by the original number
921 - 771 = 150
150 ÷ 771 = 0.19455252918287938
0.19455252918287938 x 100 = 19.46%