-71.37% is the change from 772 to 221
Calculation steps:
[( 221 - 772 ) ÷ 772] x 100 = -71.37%
Formula
Percentage change = [(221 - 772) / 772] x 100
Subtract the new number by the original number
221 - 772 = -551
-551 ÷ 772 = -0.7137305699481865
-0.7137305699481865 x 100 = -71.37%