-71.47% is the change from 631 to 180
Calculation steps:
[( 180 - 631 ) ÷ 631] x 100 = -71.47%
Formula
Percentage change = [(180 - 631) / 631] x 100
Subtract the new number by the original number
180 - 631 = -451
-451 ÷ 631 = -0.7147385103011094
-0.7147385103011094 x 100 = -71.47%