-67.47% is the change from 790 to 257
Calculation steps:
[( 257 - 790 ) ÷ 790] x 100 = -67.47%
Formula
Percentage change = [(257 - 790) / 790] x 100
Subtract the new number by the original number
257 - 790 = -533
-533 ÷ 790 = -0.6746835443037975
-0.6746835443037975 x 100 = -67.47%