550% is the change from 10 to 65
Calculation steps:
[( 65 - 10 ) ÷ 10] x 100 = 550%
Formula
Percentage change = [(65 - 10) / 10] x 100
Subtract the new number by the original number
65 - 10 = 55
55 ÷ 10 = 5.5
5.5 x 100 = 550%
Example