-41.3% is the change from 247 to 145
Calculation steps:
[( 145 - 247 ) ÷ 247] x 100 = -41.3%
Formula
Percentage change = [(145 - 247) / 247] x 100
Subtract the new number by the original number
145 - 247 = -102
-102 ÷ 247 = -0.41295546558704455
-0.41295546558704455 x 100 = -41.3%