-37.88% is the change from 998 to 620
Calculation steps:
[( 620 - 998 ) ÷ 998] x 100 = -37.88%
Formula
Percentage change = [(620 - 998) / 998] x 100
Subtract the new number by the original number
620 - 998 = -378
-378 ÷ 998 = -0.3787575150300601
-0.3787575150300601 x 100 = -37.88%