-31.8% is the change from 305 to 208
Calculation steps:
[( 208 - 305 ) ÷ 305] x 100 = -31.8%
Formula
Percentage change = [(208 - 305) / 305] x 100
Subtract the new number by the original number
208 - 305 = -97
-97 ÷ 305 = -0.3180327868852459
-0.3180327868852459 x 100 = -31.8%