-22.06% is the change from 988 to 770
Calculation steps:
[( 770 - 988 ) ÷ 988] x 100 = -22.06%
Formula
Percentage change = [(770 - 988) / 988] x 100
Subtract the new number by the original number
770 - 988 = -218
-218 ÷ 988 = -0.22064777327935223
-0.22064777327935223 x 100 = -22.06%