-15.95% is the change from 790 to 664
Calculation steps:
[( 664 - 790 ) ÷ 790] x 100 = -15.95%
Formula
Percentage change = [(664 - 790) / 790] x 100
Subtract the new number by the original number
664 - 790 = -126
-126 ÷ 790 = -0.15949367088607594
-0.15949367088607594 x 100 = -15.95%