-72.36% is the change from 691 to 191
Calculation steps:
[( 191 - 691 ) ÷ 691] x 100 = -72.36%
Formula
Percentage change = [(191 - 691) / 691] x 100
Subtract the new number by the original number
191 - 691 = -500
-500 ÷ 691 = -0.723589001447178
-0.723589001447178 x 100 = -72.36%