-76.89% is the change from 991 to 229
Calculation steps:
[( 229 - 991 ) ÷ 991] x 100 = -76.89%
Formula
Percentage change = [(229 - 991) / 991] x 100
Subtract the new number by the original number
229 - 991 = -762
-762 ÷ 991 = -0.768920282542886
-0.768920282542886 x 100 = -76.89%