-78.15% is the change from 993 to 217
Calculation steps:
[( 217 - 993 ) ÷ 993] x 100 = -78.15%
Formula
Percentage change = [(217 - 993) / 993] x 100
Subtract the new number by the original number
217 - 993 = -776
-776 ÷ 993 = -0.7814702920443102
-0.7814702920443102 x 100 = -78.15%