-18% is the change from 989 to 811
Calculation steps:
[( 811 - 989 ) ÷ 989] x 100 = -18%
Formula
Percentage change = [(811 - 989) / 989] x 100
Subtract the new number by the original number
811 - 989 = -178
-178 ÷ 989 = -0.17997977755308392
-0.17997977755308392 x 100 = -18%