-67.08% is the change from 641 to 211
Calculation steps:
[( 211 - 641 ) ÷ 641] x 100 = -67.08%
Formula
Percentage change = [(211 - 641) / 641] x 100
Subtract the new number by the original number
211 - 641 = -430
-430 ÷ 641 = -0.6708268330733229
-0.6708268330733229 x 100 = -67.08%