11.45% is the change from 821 to 915
Calculation steps:
[( 915 - 821 ) ÷ 821] x 100 = 11.45%
Formula
Percentage change = [(915 - 821) / 821] x 100
Subtract the new number by the original number
915 - 821 = 94
94 ÷ 821 = 0.11449451887941535
0.11449451887941535 x 100 = 11.45%