-22.46% is the change from 993 to 770
Calculation steps:
[( 770 - 993 ) ÷ 993] x 100 = -22.46%
Formula
Percentage change = [(770 - 993) / 993] x 100
Subtract the new number by the original number
770 - 993 = -223
-223 ÷ 993 = -0.22457200402819738
-0.22457200402819738 x 100 = -22.46%