-17.51% is the change from 634 to 523
Calculation steps:
[( 523 - 634 ) ÷ 634] x 100 = -17.51%
Formula
Percentage change = [(523 - 634) / 634] x 100
Subtract the new number by the original number
523 - 634 = -111
-111 ÷ 634 = -0.1750788643533123
-0.1750788643533123 x 100 = -17.51%