-78.31% is the change from 166 to 36
Calculation steps:
[( 36 - 166 ) ÷ 166] x 100 = -78.31%
Formula
Percentage change = [(36 - 166) / 166] x 100
Subtract the new number by the original number
36 - 166 = -130
-130 ÷ 166 = -0.7831325301204819
-0.7831325301204819 x 100 = -78.31%