-57.1% is the change from 993 to 426
Calculation steps:
[( 426 - 993 ) ÷ 993] x 100 = -57.1%
Formula
Percentage change = [(426 - 993) / 993] x 100
Subtract the new number by the original number
426 - 993 = -567
-567 ÷ 993 = -0.5709969788519638
-0.5709969788519638 x 100 = -57.1%