-64.47% is the change from 622 to 221
Calculation steps:
[( 221 - 622 ) ÷ 622] x 100 = -64.47%
Formula
Percentage change = [(221 - 622) / 622] x 100
Subtract the new number by the original number
221 - 622 = -401
-401 ÷ 622 = -0.6446945337620579
-0.6446945337620579 x 100 = -64.47%