-67.74% is the change from 685 to 221
Calculation steps:
[( 221 - 685 ) ÷ 685] x 100 = -67.74%
Formula
Percentage change = [(221 - 685) / 685] x 100
Subtract the new number by the original number
221 - 685 = -464
-464 ÷ 685 = -0.6773722627737226
-0.6773722627737226 x 100 = -67.74%