-83.67% is the change from 245 to 40
Calculation steps:
[( 40 - 245 ) ÷ 245] x 100 = -83.67%
Formula
Percentage change = [(40 - 245) / 245] x 100
Subtract the new number by the original number
40 - 245 = -205
-205 ÷ 245 = -0.8367346938775511
-0.8367346938775511 x 100 = -83.67%