-97.38% is the change from 305 to 8
Calculation steps:
[( 8 - 305 ) ÷ 305] x 100 = -97.38%
Formula
Percentage change = [(8 - 305) / 305] x 100
Subtract the new number by the original number
8 - 305 = -297
-297 ÷ 305 = -0.9737704918032787
-0.9737704918032787 x 100 = -97.38%