-69.11% is the change from 832 to 257
Calculation steps:
[( 257 - 832 ) ÷ 832] x 100 = -69.11%
Formula
Percentage change = [(257 - 832) / 832] x 100
Subtract the new number by the original number
257 - 832 = -575
-575 ÷ 832 = -0.6911057692307693
-0.6911057692307693 x 100 = -69.11%