8.55% is the change from 912 to 990
Calculation steps:
[( 990 - 912 ) ÷ 912] x 100 = 8.55%
Formula
Percentage change = [(990 - 912) / 912] x 100
Subtract the new number by the original number
990 - 912 = 78
78 ÷ 912 = 0.08552631578947369
0.08552631578947369 x 100 = 8.55%