-55.72% is the change from 691 to 306
Calculation steps:
[( 306 - 691 ) ÷ 691] x 100 = -55.72%
Formula
Percentage change = [(306 - 691) / 691] x 100
Subtract the new number by the original number
306 - 691 = -385
-385 ÷ 691 = -0.557163531114327
-0.557163531114327 x 100 = -55.72%