-50.63% is the change from 632 to 312
Calculation steps:
[( 312 - 632 ) ÷ 632] x 100 = -50.63%
Formula
Percentage change = [(312 - 632) / 632] x 100
Subtract the new number by the original number
312 - 632 = -320
-320 ÷ 632 = -0.5063291139240507
-0.5063291139240507 x 100 = -50.63%