-79.35% is the change from 494 to 102
Calculation steps:
[( 102 - 494 ) ÷ 494] x 100 = -79.35%
Formula
Percentage change = [(102 - 494) / 494] x 100
Subtract the new number by the original number
102 - 494 = -392
-392 ÷ 494 = -0.7935222672064778
-0.7935222672064778 x 100 = -79.35%