-96.28% is the change from 215 to 8
Calculation steps:
[( 8 - 215 ) ÷ 215] x 100 = -96.28%
Formula
Percentage change = [(8 - 215) / 215] x 100
Subtract the new number by the original number
8 - 215 = -207
-207 ÷ 215 = -0.9627906976744186
-0.9627906976744186 x 100 = -96.28%