-89% is the change from 709 to 78
Calculation steps:
[( 78 - 709 ) ÷ 709] x 100 = -89%
Formula
Percentage change = [(78 - 709) / 709] x 100
Subtract the new number by the original number
78 - 709 = -631
-631 ÷ 709 = -0.8899858956276445
-0.8899858956276445 x 100 = -89%