-77.26% is the change from 972 to 221
Calculation steps:
[( 221 - 972 ) ÷ 972] x 100 = -77.26%
Formula
Percentage change = [(221 - 972) / 972] x 100
Subtract the new number by the original number
221 - 972 = -751
-751 ÷ 972 = -0.772633744855967
-0.772633744855967 x 100 = -77.26%