-60.87% is the change from 115 to 45
Calculation steps:
[( 45 - 115 ) ÷ 115] x 100 = -60.87%
Formula
Percentage change = [(45 - 115) / 115] x 100
Subtract the new number by the original number
45 - 115 = -70
-70 ÷ 115 = -0.6086956521739131
-0.6086956521739131 x 100 = -60.87%