650% is the change from 60 to 450
Calculation steps:
[( 450 - 60 ) ÷ 60] x 100 = 650%
Formula
Percentage change = [(450 - 60) / 60] x 100
Subtract the new number by the original number
450 - 60 = 390
390 ÷ 60 = 6.5
6.5 x 100 = 650%
Example