-92.49% is the change from 173 to 13
Calculation steps:
[( 13 - 173 ) ÷ 173] x 100 = -92.49%
Formula
Percentage change = [(13 - 173) / 173] x 100
Subtract the new number by the original number
13 - 173 = -160
-160 ÷ 173 = -0.9248554913294798
-0.9248554913294798 x 100 = -92.49%