-61.58% is the change from 669 to 257
Calculation steps:
[( 257 - 669 ) ÷ 669] x 100 = -61.58%
Formula
Percentage change = [(257 - 669) / 669] x 100
Subtract the new number by the original number
257 - 669 = -412
-412 ÷ 669 = -0.6158445440956651
-0.6158445440956651 x 100 = -61.58%