-65.26% is the change from 639 to 222
Calculation steps:
[( 222 - 639 ) ÷ 639] x 100 = -65.26%
Formula
Percentage change = [(222 - 639) / 639] x 100
Subtract the new number by the original number
222 - 639 = -417
-417 ÷ 639 = -0.6525821596244131
-0.6525821596244131 x 100 = -65.26%