-92.78% is the change from 180 to 13
Calculation steps:
[( 13 - 180 ) ÷ 180] x 100 = -92.78%
Formula
Percentage change = [(13 - 180) / 180] x 100
Subtract the new number by the original number
13 - 180 = -167
-167 ÷ 180 = -0.9277777777777778
-0.9277777777777778 x 100 = -92.78%