-30.96% is the change from 898 to 620
Calculation steps:
[( 620 - 898 ) ÷ 898] x 100 = -30.96%
Formula
Percentage change = [(620 - 898) / 898] x 100
Subtract the new number by the original number
620 - 898 = -278
-278 ÷ 898 = -0.30957683741648107
-0.30957683741648107 x 100 = -30.96%