269.57% is the change from 69 to 255
Calculation steps:
[( 255 - 69 ) ÷ 69] x 100 = 269.57%
Formula
Percentage change = [(255 - 69) / 69] x 100
Subtract the new number by the original number
255 - 69 = 186
186 ÷ 69 = 2.6956521739130435
2.6956521739130435 x 100 = 269.57%