-85.15% is the change from 101 to 15
Calculation steps:
[( 15 - 101 ) ÷ 101] x 100 = -85.15%
Formula
Percentage change = [(15 - 101) / 101] x 100
Subtract the new number by the original number
15 - 101 = -86
-86 ÷ 101 = -0.8514851485148515
-0.8514851485148515 x 100 = -85.15%