-31.27% is the change from 758 to 521
Calculation steps:
[( 521 - 758 ) ÷ 758] x 100 = -31.27%
Formula
Percentage change = [(521 - 758) / 758] x 100
Subtract the new number by the original number
521 - 758 = -237
-237 ÷ 758 = -0.31266490765171506
-0.31266490765171506 x 100 = -31.27%