-62.75% is the change from 690 to 257
Calculation steps:
[( 257 - 690 ) ÷ 690] x 100 = -62.75%
Formula
Percentage change = [(257 - 690) / 690] x 100
Subtract the new number by the original number
257 - 690 = -433
-433 ÷ 690 = -0.6275362318840579
-0.6275362318840579 x 100 = -62.75%