-27.53% is the change from 890 to 645
Calculation steps:
[( 645 - 890 ) ÷ 890] x 100 = -27.53%
Formula
Percentage change = [(645 - 890) / 890] x 100
Subtract the new number by the original number
645 - 890 = -245
-245 ÷ 890 = -0.2752808988764045
-0.2752808988764045 x 100 = -27.53%