26900% is the change from 1 to 270
Calculation steps:
[( 270 - 1 ) ÷ 1] x 100 = 26900%
Formula
Percentage change = [(270 - 1) / 1] x 100
Subtract the new number by the original number
270 - 1 = 269
269 ÷ 1 = 269
269 x 100 = 26900%
Example