-87.06% is the change from 997 to 129
Calculation steps:
[( 129 - 997 ) ÷ 997] x 100 = -87.06%
Formula
Percentage change = [(129 - 997) / 997] x 100
Subtract the new number by the original number
129 - 997 = -868
-868 ÷ 997 = -0.8706118355065195
-0.8706118355065195 x 100 = -87.06%