-30.18% is the change from 888 to 620
Calculation steps:
[( 620 - 888 ) ÷ 888] x 100 = -30.18%
Formula
Percentage change = [(620 - 888) / 888] x 100
Subtract the new number by the original number
620 - 888 = -268
-268 ÷ 888 = -0.30180180180180183
-0.30180180180180183 x 100 = -30.18%