-76.49% is the change from 991 to 233
Calculation steps:
[( 233 - 991 ) ÷ 991] x 100 = -76.49%
Formula
Percentage change = [(233 - 991) / 991] x 100
Subtract the new number by the original number
233 - 991 = -758
-758 ÷ 991 = -0.7648839556004037
-0.7648839556004037 x 100 = -76.49%