-35.5% is the change from 307 to 198
Calculation steps:
[( 198 - 307 ) ÷ 307] x 100 = -35.5%
Formula
Percentage change = [(198 - 307) / 307] x 100
Subtract the new number by the original number
198 - 307 = -109
-109 ÷ 307 = -0.3550488599348534
-0.3550488599348534 x 100 = -35.5%