-60.62% is the change from 993 to 391
Calculation steps:
[( 391 - 993 ) ÷ 993] x 100 = -60.62%
Formula
Percentage change = [(391 - 993) / 993] x 100
Subtract the new number by the original number
391 - 993 = -602
-602 ÷ 993 = -0.6062437059415912
-0.6062437059415912 x 100 = -60.62%