-78.15% is the change from 691 to 151
Calculation steps:
[( 151 - 691 ) ÷ 691] x 100 = -78.15%
Formula
Percentage change = [(151 - 691) / 691] x 100
Subtract the new number by the original number
151 - 691 = -540
-540 ÷ 691 = -0.7814761215629522
-0.7814761215629522 x 100 = -78.15%