-44.04% is the change from 915 to 512
Calculation steps:
[( 512 - 915 ) ÷ 915] x 100 = -44.04%
Formula
Percentage change = [(512 - 915) / 915] x 100
Subtract the new number by the original number
512 - 915 = -403
-403 ÷ 915 = -0.44043715846994536
-0.44043715846994536 x 100 = -44.04%