-81.5% is the change from 973 to 180
Calculation steps:
[( 180 - 973 ) ÷ 973] x 100 = -81.5%
Formula
Percentage change = [(180 - 973) / 973] x 100
Subtract the new number by the original number
180 - 973 = -793
-793 ÷ 973 = -0.8150051387461459
-0.8150051387461459 x 100 = -81.5%