1550% is the change from 60 to 990
Calculation steps:
[( 990 - 60 ) ÷ 60] x 100 = 1550%
Formula
Percentage change = [(990 - 60) / 60] x 100
Subtract the new number by the original number
990 - 60 = 930
930 ÷ 60 = 15.5
15.5 x 100 = 1550%
Example