170.98% is the change from 255 to 691
Calculation steps:
[( 691 - 255 ) ÷ 255] x 100 = 170.98%
Formula
Percentage change = [(691 - 255) / 255] x 100
Subtract the new number by the original number
691 - 255 = 436
436 ÷ 255 = 1.7098039215686274
1.7098039215686274 x 100 = 170.98%