-19.14% is the change from 794 to 642
Calculation steps:
[( 642 - 794 ) ÷ 794] x 100 = -19.14%
Formula
Percentage change = [(642 - 794) / 794] x 100
Subtract the new number by the original number
642 - 794 = -152
-152 ÷ 794 = -0.19143576826196473
-0.19143576826196473 x 100 = -19.14%