-18.51% is the change from 632 to 515
Calculation steps:
[( 515 - 632 ) ÷ 632] x 100 = -18.51%
Formula
Percentage change = [(515 - 632) / 632] x 100
Subtract the new number by the original number
515 - 632 = -117
-117 ÷ 632 = -0.185126582278481
-0.185126582278481 x 100 = -18.51%