-89.73% is the change from 691 to 71
Calculation steps:
[( 71 - 691 ) ÷ 691] x 100 = -89.73%
Formula
Percentage change = [(71 - 691) / 691] x 100
Subtract the new number by the original number
71 - 691 = -620
-620 ÷ 691 = -0.8972503617945007
-0.8972503617945007 x 100 = -89.73%