-58.75% is the change from 623 to 257
Calculation steps:
[( 257 - 623 ) ÷ 623] x 100 = -58.75%
Formula
Percentage change = [(257 - 623) / 623] x 100
Subtract the new number by the original number
257 - 623 = -366
-366 ÷ 623 = -0.5874799357945425
-0.5874799357945425 x 100 = -58.75%