-74.33% is the change from 861 to 221
Calculation steps:
[( 221 - 861 ) ÷ 861] x 100 = -74.33%
Formula
Percentage change = [(221 - 861) / 861] x 100
Subtract the new number by the original number
221 - 861 = -640
-640 ÷ 861 = -0.743321718931475
-0.743321718931475 x 100 = -74.33%