-19.49% is the change from 790 to 636
Calculation steps:
[( 636 - 790 ) ÷ 790] x 100 = -19.49%
Formula
Percentage change = [(636 - 790) / 790] x 100
Subtract the new number by the original number
636 - 790 = -154
-154 ÷ 790 = -0.1949367088607595
-0.1949367088607595 x 100 = -19.49%