-99.34% is the change from 305 to 2
Calculation steps:
[( 2 - 305 ) ÷ 305] x 100 = -99.34%
Formula
Percentage change = [(2 - 305) / 305] x 100
Subtract the new number by the original number
2 - 305 = -303
-303 ÷ 305 = -0.9934426229508196
-0.9934426229508196 x 100 = -99.34%