-98.89% is the change from 180 to 2
Calculation steps:
[( 2 - 180 ) ÷ 180] x 100 = -98.89%
Formula
Percentage change = [(2 - 180) / 180] x 100
Subtract the new number by the original number
2 - 180 = -178
-178 ÷ 180 = -0.9888888888888889
-0.9888888888888889 x 100 = -98.89%