-68.95% is the change from 641 to 199
Calculation steps:
[( 199 - 641 ) ÷ 641] x 100 = -68.95%
Formula
Percentage change = [(199 - 641) / 641] x 100
Subtract the new number by the original number
199 - 641 = -442
-442 ÷ 641 = -0.6895475819032761
-0.6895475819032761 x 100 = -68.95%