-24.75% is the change from 691 to 520
Calculation steps:
[( 520 - 691 ) ÷ 691] x 100 = -24.75%
Formula
Percentage change = [(520 - 691) / 691] x 100
Subtract the new number by the original number
520 - 691 = -171
-171 ÷ 691 = -0.24746743849493488
-0.24746743849493488 x 100 = -24.75%