-29.84% is the change from 305 to 214
Calculation steps:
[( 214 - 305 ) ÷ 305] x 100 = -29.84%
Formula
Percentage change = [(214 - 305) / 305] x 100
Subtract the new number by the original number
214 - 305 = -91
-91 ÷ 305 = -0.2983606557377049
-0.2983606557377049 x 100 = -29.84%