-35.35% is the change from 778 to 503
Calculation steps:
[( 503 - 778 ) ÷ 778] x 100 = -35.35%
Formula
Percentage change = [(503 - 778) / 778] x 100
Subtract the new number by the original number
503 - 778 = -275
-275 ÷ 778 = -0.35347043701799485
-0.35347043701799485 x 100 = -35.35%