-64.83% is the change from 634 to 223
Calculation steps:
[( 223 - 634 ) ÷ 634] x 100 = -64.83%
Formula
Percentage change = [(223 - 634) / 634] x 100
Subtract the new number by the original number
223 - 634 = -411
-411 ÷ 634 = -0.6482649842271293
-0.6482649842271293 x 100 = -64.83%