-21.55% is the change from 979 to 768
Calculation steps:
[( 768 - 979 ) ÷ 979] x 100 = -21.55%
Formula
Percentage change = [(768 - 979) / 979] x 100
Subtract the new number by the original number
768 - 979 = -211
-211 ÷ 979 = -0.21552604698672115
-0.21552604698672115 x 100 = -21.55%