-68.02% is the change from 691 to 221
Calculation steps:
[( 221 - 691 ) ÷ 691] x 100 = -68.02%
Formula
Percentage change = [(221 - 691) / 691] x 100
Subtract the new number by the original number
221 - 691 = -470
-470 ÷ 691 = -0.6801736613603473
-0.6801736613603473 x 100 = -68.02%