-34.18% is the change from 790 to 520
Calculation steps:
[( 520 - 790 ) ÷ 790] x 100 = -34.18%
Formula
Percentage change = [(520 - 790) / 790] x 100
Subtract the new number by the original number
520 - 790 = -270
-270 ÷ 790 = -0.34177215189873417
-0.34177215189873417 x 100 = -34.18%