-45.51% is the change from 167 to 91
Calculation steps:
[( 91 - 167 ) ÷ 167] x 100 = -45.51%
Formula
Percentage change = [(91 - 167) / 167] x 100
Subtract the new number by the original number
91 - 167 = -76
-76 ÷ 167 = -0.4550898203592814
-0.4550898203592814 x 100 = -45.51%