-68.78% is the change from 631 to 197
Calculation steps:
[( 197 - 631 ) ÷ 631] x 100 = -68.78%
Formula
Percentage change = [(197 - 631) / 631] x 100
Subtract the new number by the original number
197 - 631 = -434
-434 ÷ 631 = -0.687797147385103
-0.687797147385103 x 100 = -68.78%