-63.88% is the change from 634 to 229
Calculation steps:
[( 229 - 634 ) ÷ 634] x 100 = -63.88%
Formula
Percentage change = [(229 - 634) / 634] x 100
Subtract the new number by the original number
229 - 634 = -405
-405 ÷ 634 = -0.638801261829653
-0.638801261829653 x 100 = -63.88%