-22.12% is the change from 651 to 507
Calculation steps:
[( 507 - 651 ) ÷ 651] x 100 = -22.12%
Formula
Percentage change = [(507 - 651) / 651] x 100
Subtract the new number by the original number
507 - 651 = -144
-144 ÷ 651 = -0.22119815668202766
-0.22119815668202766 x 100 = -22.12%