-79.88% is the change from 169 to 34
Calculation steps:
[( 34 - 169 ) ÷ 169] x 100 = -79.88%
Formula
Percentage change = [(34 - 169) / 169] x 100
Subtract the new number by the original number
34 - 169 = -135
-135 ÷ 169 = -0.7988165680473372
-0.7988165680473372 x 100 = -79.88%