-35.28% is the change from 309 to 200
Calculation steps:
[( 200 - 309 ) ÷ 309] x 100 = -35.28%
Formula
Percentage change = [(200 - 309) / 309] x 100
Subtract the new number by the original number
200 - 309 = -109
-109 ÷ 309 = -0.35275080906148865
-0.35275080906148865 x 100 = -35.28%