-26.63% is the change from 845 to 620
Calculation steps:
[( 620 - 845 ) ÷ 845] x 100 = -26.63%
Formula
Percentage change = [(620 - 845) / 845] x 100
Subtract the new number by the original number
620 - 845 = -225
-225 ÷ 845 = -0.26627218934911245
-0.26627218934911245 x 100 = -26.63%