1400% is the change from 66 to 990
Calculation steps:
[( 990 - 66 ) ÷ 66] x 100 = 1400%
Formula
Percentage change = [(990 - 66) / 66] x 100
Subtract the new number by the original number
990 - 66 = 924
924 ÷ 66 = 14
14 x 100 = 1400%
Example