Explanation:
100% = 1028
1% = 100%/100 = 1028/100 = 10.28
the decrease was
1028 - 755 = 273
these 273 were how many % ?
as many % as how often 1% fits into 273 :
273 / 10.28 = 26.55642023... %
this was a 26.55642023...% decrease.
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