260% is the change from 75 to 270
Calculation steps:
[( 270 - 75 ) ÷ 75] x 100 = 260%
Formula
Percentage change = [(270 - 75) / 75] x 100
Subtract the new number by the original number
270 - 75 = 195
195 ÷ 75 = 2.6
2.6 x 100 = 260%
Example