-77.39% is the change from 973 to 220
Calculation steps:
[( 220 - 973 ) ÷ 973] x 100 = -77.39%
Formula
Percentage change = [(220 - 973) / 973] x 100
Subtract the new number by the original number
220 - 973 = -753
-753 ÷ 973 = -0.7738951695786228
-0.7738951695786228 x 100 = -77.39%