-52.07% is the change from 651 to 312
Calculation steps:
[( 312 - 651 ) ÷ 651] x 100 = -52.07%
Formula
Percentage change = [(312 - 651) / 651] x 100
Subtract the new number by the original number
312 - 651 = -339
-339 ÷ 651 = -0.5207373271889401
-0.5207373271889401 x 100 = -52.07%