-63.78% is the change from 635 to 230
Calculation steps:
[( 230 - 635 ) ÷ 635] x 100 = -63.78%
Formula
Percentage change = [(230 - 635) / 635] x 100
Subtract the new number by the original number
230 - 635 = -405
-405 ÷ 635 = -0.6377952755905512
-0.6377952755905512 x 100 = -63.78%