-50.76% is the change from 859 to 423
Calculation steps:
[( 423 - 859 ) ÷ 859] x 100 = -50.76%
Formula
Percentage change = [(423 - 859) / 859] x 100
Subtract the new number by the original number
423 - 859 = -436
-436 ÷ 859 = -0.5075669383003493
-0.5075669383003493 x 100 = -50.76%