-17.9% is the change from 782 to 642
Calculation steps:
[( 642 - 782 ) ÷ 782] x 100 = -17.9%
Formula
Percentage change = [(642 - 782) / 782] x 100
Subtract the new number by the original number
642 - 782 = -140
-140 ÷ 782 = -0.17902813299232737
-0.17902813299232737 x 100 = -17.9%