2550% is the change from 10 to 265
Calculation steps:
[( 265 - 10 ) ÷ 10] x 100 = 2550%
Formula
Percentage change = [(265 - 10) / 10] x 100
Subtract the new number by the original number
265 - 10 = 255
255 ÷ 10 = 25.5
25.5 x 100 = 2550%
Example