-67.24% is the change from 641 to 210
Calculation steps:
[( 210 - 641 ) ÷ 641] x 100 = -67.24%
Formula
Percentage change = [(210 - 641) / 641] x 100
Subtract the new number by the original number
210 - 641 = -431
-431 ÷ 641 = -0.672386895475819
-0.672386895475819 x 100 = -67.24%