-19.68% is the change from 620 to 498
Calculation steps:
[( 498 - 620 ) ÷ 620] x 100 = -19.68%
Formula
Percentage change = [(498 - 620) / 620] x 100
Subtract the new number by the original number
498 - 620 = -122
-122 ÷ 620 = -0.1967741935483871
-0.1967741935483871 x 100 = -19.68%