-61.38% is the change from 650 to 251
Calculation steps:
[( 251 - 650 ) ÷ 650] x 100 = -61.38%
Formula
Percentage change = [(251 - 650) / 650] x 100
Subtract the new number by the original number
251 - 650 = -399
-399 ÷ 650 = -0.6138461538461538
-0.6138461538461538 x 100 = -61.38%