-31.1% is the change from 987 to 680
Calculation steps:
[( 680 - 987 ) ÷ 987] x 100 = -31.1%
Formula
Percentage change = [(680 - 987) / 987] x 100
Subtract the new number by the original number
680 - 987 = -307
-307 ÷ 987 = -0.3110435663627153
-0.3110435663627153 x 100 = -31.1%