-47.94% is the change from 993 to 517
Calculation steps:
[( 517 - 993 ) ÷ 993] x 100 = -47.94%
Formula
Percentage change = [(517 - 993) / 993] x 100
Subtract the new number by the original number
517 - 993 = -476
-476 ÷ 993 = -0.47935548841893255
-0.47935548841893255 x 100 = -47.94%