-50.38% is the change from 915 to 454
Calculation steps:
[( 454 - 915 ) ÷ 915] x 100 = -50.38%
Formula
Percentage change = [(454 - 915) / 915] x 100
Subtract the new number by the original number
454 - 915 = -461
-461 ÷ 915 = -0.5038251366120219
-0.5038251366120219 x 100 = -50.38%