-40.41% is the change from 193 to 115
Calculation steps:
[( 115 - 193 ) ÷ 193] x 100 = -40.41%
Formula
Percentage change = [(115 - 193) / 193] x 100
Subtract the new number by the original number
115 - 193 = -78
-78 ÷ 193 = -0.40414507772020725
-0.40414507772020725 x 100 = -40.41%