-93.77% is the change from 257 to 16
Calculation steps:
[( 16 - 257 ) ÷ 257] x 100 = -93.77%
Formula
Percentage change = [(16 - 257) / 257] x 100
Subtract the new number by the original number
16 - 257 = -241
-241 ÷ 257 = -0.9377431906614786
-0.9377431906614786 x 100 = -93.77%