-66.59% is the change from 916 to 306
Calculation steps:
[( 306 - 916 ) ÷ 916] x 100 = -66.59%
Formula
Percentage change = [(306 - 916) / 916] x 100
Subtract the new number by the original number
306 - 916 = -610
-610 ÷ 916 = -0.665938864628821
-0.665938864628821 x 100 = -66.59%