-18.14% is the change from 634 to 519
Calculation steps:
[( 519 - 634 ) ÷ 634] x 100 = -18.14%
Formula
Percentage change = [(519 - 634) / 634] x 100
Subtract the new number by the original number
519 - 634 = -115
-115 ÷ 634 = -0.18138801261829654
-0.18138801261829654 x 100 = -18.14%