-76.6% is the change from 987 to 231
Calculation steps:
[( 231 - 987 ) ÷ 987] x 100 = -76.6%
Formula
Percentage change = [(231 - 987) / 987] x 100
Subtract the new number by the original number
231 - 987 = -756
-756 ÷ 987 = -0.7659574468085106
-0.7659574468085106 x 100 = -76.6%