-71% is the change from 931 to 270
Calculation steps:
[( 270 - 931 ) ÷ 931] x 100 = -71%
Formula
Percentage change = [(270 - 931) / 931] x 100
Subtract the new number by the original number
270 - 931 = -661
-661 ÷ 931 = -0.7099892588614393
-0.7099892588614393 x 100 = -71%