-49.11% is the change from 169 to 86
Calculation steps:
[( 86 - 169 ) ÷ 169] x 100 = -49.11%
Formula
Percentage change = [(86 - 169) / 169] x 100
Subtract the new number by the original number
86 - 169 = -83
-83 ÷ 169 = -0.4911242603550296
-0.4911242603550296 x 100 = -49.11%