-89.63% is the change from 164 to 17
Calculation steps:
[( 17 - 164 ) ÷ 164] x 100 = -89.63%
Formula
Percentage change = [(17 - 164) / 164] x 100
Subtract the new number by the original number
17 - 164 = -147
-147 ÷ 164 = -0.8963414634146342
-0.8963414634146342 x 100 = -89.63%