-35.29% is the change from 306 to 198
Calculation steps:
[( 198 - 306 ) ÷ 306] x 100 = -35.29%
Formula
Percentage change = [(198 - 306) / 306] x 100
Subtract the new number by the original number
198 - 306 = -108
-108 ÷ 306 = -0.35294117647058826
-0.35294117647058826 x 100 = -35.29%