-66.72% is the change from 631 to 210
Calculation steps:
[( 210 - 631 ) ÷ 631] x 100 = -66.72%
Formula
Percentage change = [(210 - 631) / 631] x 100
Subtract the new number by the original number
210 - 631 = -421
-421 ÷ 631 = -0.6671949286846276
-0.6671949286846276 x 100 = -66.72%