-15.52% is the change from 786 to 664
Calculation steps:
[( 664 - 786 ) ÷ 786] x 100 = -15.52%
Formula
Percentage change = [(664 - 786) / 786] x 100
Subtract the new number by the original number
664 - 786 = -122
-122 ÷ 786 = -0.15521628498727735
-0.15521628498727735 x 100 = -15.52%