-57.4% is the change from 993 to 423
Calculation steps:
[( 423 - 993 ) ÷ 993] x 100 = -57.4%
Formula
Percentage change = [(423 - 993) / 993] x 100
Subtract the new number by the original number
423 - 993 = -570
-570 ÷ 993 = -0.5740181268882175
-0.5740181268882175 x 100 = -57.4%