342.62% is the change from 61 to 270
Calculation steps:
[( 270 - 61 ) ÷ 61] x 100 = 342.62%
Formula
Percentage change = [(270 - 61) / 61] x 100
Subtract the new number by the original number
270 - 61 = 209
209 ÷ 61 = 3.4262295081967213
3.4262295081967213 x 100 = 342.62%