-60.47% is the change from 215 to 85
Calculation steps:
[( 85 - 215 ) ÷ 215] x 100 = -60.47%
Formula
Percentage change = [(85 - 215) / 215] x 100
Subtract the new number by the original number
85 - 215 = -130
-130 ÷ 215 = -0.6046511627906976
-0.6046511627906976 x 100 = -60.47%