-53.98% is the change from 993 to 457
Calculation steps:
[( 457 - 993 ) ÷ 993] x 100 = -53.98%
Formula
Percentage change = [(457 - 993) / 993] x 100
Subtract the new number by the original number
457 - 993 = -536
-536 ÷ 993 = -0.5397784491440081
-0.5397784491440081 x 100 = -53.98%