13.28% is the change from 813 to 921
Calculation steps:
[( 921 - 813 ) ÷ 813] x 100 = 13.28%
Formula
Percentage change = [(921 - 813) / 813] x 100
Subtract the new number by the original number
921 - 813 = 108
108 ÷ 813 = 0.13284132841328414
0.13284132841328414 x 100 = 13.28%