-70.3% is the change from 845 to 251
Calculation steps:
[( 251 - 845 ) ÷ 845] x 100 = -70.3%
Formula
Percentage change = [(251 - 845) / 845] x 100
Subtract the new number by the original number
251 - 845 = -594
-594 ÷ 845 = -0.7029585798816568
-0.7029585798816568 x 100 = -70.3%