-2.76% is the change from 651 to 633
Calculation steps:
[( 633 - 651 ) ÷ 651] x 100 = -2.76%
Formula
Percentage change = [(633 - 651) / 651] x 100
Subtract the new number by the original number
633 - 651 = -18
-18 ÷ 651 = -0.027649769585253458
-0.027649769585253458 x 100 = -2.76%