-65.63% is the change from 646 to 222
Calculation steps:
[( 222 - 646 ) ÷ 646] x 100 = -65.63%
Formula
Percentage change = [(222 - 646) / 646] x 100
Subtract the new number by the original number
222 - 646 = -424
-424 ÷ 646 = -0.6563467492260062
-0.6563467492260062 x 100 = -65.63%