-8.07% is the change from 979 to 900
Calculation steps:
[( 900 - 979 ) ÷ 979] x 100 = -8.07%
Formula
Percentage change = [(900 - 979) / 979] x 100
Subtract the new number by the original number
900 - 979 = -79
-79 ÷ 979 = -0.08069458631256383
-0.08069458631256383 x 100 = -8.07%