-33.08% is the change from 919 to 615
Calculation steps:
[( 615 - 919 ) ÷ 919] x 100 = -33.08%
Formula
Percentage change = [(615 - 919) / 919] x 100
Subtract the new number by the original number
615 - 919 = -304
-304 ÷ 919 = -0.3307943416757345
-0.3307943416757345 x 100 = -33.08%