-98.09% is the change from 786 to 15
Calculation steps:
[( 15 - 786 ) ÷ 786] x 100 = -98.09%
Formula
Percentage change = [(15 - 786) / 786] x 100
Subtract the new number by the original number
15 - 786 = -771
-771 ÷ 786 = -0.9809160305343512
-0.9809160305343512 x 100 = -98.09%