-53.25% is the change from 815 to 381
Calculation steps:
[( 381 - 815 ) ÷ 815] x 100 = -53.25%
Formula
Percentage change = [(381 - 815) / 815] x 100
Subtract the new number by the original number
381 - 815 = -434
-434 ÷ 815 = -0.5325153374233129
-0.5325153374233129 x 100 = -53.25%