550% is the change from 60 to 390
Calculation steps:
[( 390 - 60 ) ÷ 60] x 100 = 550%
Formula
Percentage change = [(390 - 60) / 60] x 100
Subtract the new number by the original number
390 - 60 = 330
330 ÷ 60 = 5.5
5.5 x 100 = 550%
Example