-72.37% is the change from 930 to 257
Calculation steps:
[( 257 - 930 ) ÷ 930] x 100 = -72.37%
Formula
Percentage change = [(257 - 930) / 930] x 100
Subtract the new number by the original number
257 - 930 = -673
-673 ÷ 930 = -0.7236559139784946
-0.7236559139784946 x 100 = -72.37%