-17.19% is the change from 634 to 525
Calculation steps:
[( 525 - 634 ) ÷ 634] x 100 = -17.19%
Formula
Percentage change = [(525 - 634) / 634] x 100
Subtract the new number by the original number
525 - 634 = -109
-109 ÷ 634 = -0.1719242902208202
-0.1719242902208202 x 100 = -17.19%