-66.77% is the change from 635 to 211
Calculation steps:
[( 211 - 635 ) ÷ 635] x 100 = -66.77%
Formula
Percentage change = [(211 - 635) / 635] x 100
Subtract the new number by the original number
211 - 635 = -424
-424 ÷ 635 = -0.6677165354330709
-0.6677165354330709 x 100 = -66.77%