155.93% is the change from 270 to 691
Calculation steps:
[( 691 - 270 ) ÷ 270] x 100 = 155.93%
Formula
Percentage change = [(691 - 270) / 270] x 100
Subtract the new number by the original number
691 - 270 = 421
421 ÷ 270 = 1.5592592592592593
1.5592592592592593 x 100 = 155.93%