-40.49% is the change from 247 to 147
Calculation steps:
[( 147 - 247 ) ÷ 247] x 100 = -40.49%
Formula
Percentage change = [(147 - 247) / 247] x 100
Subtract the new number by the original number
147 - 247 = -100
-100 ÷ 247 = -0.4048582995951417
-0.4048582995951417 x 100 = -40.49%